TIBPAL20R6-10CNT

Overview

The TIBPAL20R6-10CNT is a high-performance Impact-X PAL circuit manufactured by Texas Instruments. It features 12 dedicated inputs and 6 registered outputs with 3-state buffers, plus 2 I/O ports, housed in a 24-pin plastic DIP package. The device utilizes Advanced Low-Power Schottky technology with titanium-tungsten fuses for reliable operation. Key electrical parameters include a maximum propagation delay of 10 ns, a nominal supply voltage of 5 V (range 4.75 V to 5.25 V), and a maximum clock frequency of 71.4 MHz without feedback. It operates within a temperature range of 0°C to 75°C.

Feature Summary

• High-speed performance with 10 ns max propagation delay and 71.4 MHz max clock frequency.
• Registered outputs with power-up clear and preload capability for simplified testing.
• Security fuse prevents duplication of the programmed logic function.
• Functionally equivalent but faster than existing 24-pin PLD circuits.

Applications

• State-machine designs requiring external feedback.
• Counter configurations utilizing internal feedback.
• Custom logic functions replacing conventional TTL logic.

Procurement Notes

Verify the component matches the specific 'CNT' suffix for the plastic DIP package. Confirm RoHS compliance status as older TI PAL devices may not be lead-free. Check for obsolescence or limited availability given the publication date of the datasheet. Ensure programming equipment supports the Impact-X architecture and titanium-tungsten fuse specifications.

Selection Notes

Select this model when 12 inputs and 6 registered outputs are required. Choose the CNT variant specifically for through-hole plastic DIP assembly. Consider the TIBPAL20L8-10C if combinatorial outputs are needed instead of registered ones. Verify that the 5 V supply voltage and 0°C to 75°C operating temperature range meet system requirements.

Part Context

This part belongs to the TIBPAL20xx-10C series, which includes variants like TIBPAL20L8, TIBPAL20R4, and TIBPAL20R8. These devices share the same 24-pin footprint and core Impact-X architecture but differ in output configuration (combinatorial vs. registered) and I/O port counts. The series was designed as a high-performance substitute for standard TTL logic families.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should verify pin compatibility and logic equivalence carefully when considering generic PAL replacements.